How long a red tailed catfish can stay out of the water depends on the fish in question and how moist the fish's gills are.
the walkin catfish can live above water aslong as you KEEP it moist or it will die
Not long. There skin needs to stay moist. They do not travel far away from water.
3 years
That's too long.....no more than a few hours
No
how long can garter snakes stay under water?
They can stay under water for 10 seconds.
Fish have a resportory system that in comparaison has about the same limits as most living things. Its like me asking how long can a human stay under water. there are a few exceptions of creatures that can last for a long amount of time in a diffrent enviroment. but that is based upon lung size and the gas exchange and the energy/metabolism of the gas being used. Catfish 1-4mins tho. beyond 2min is pushing it for large older fish. 12 min's has happened before tho that i have seen (note the tank broke and water was in the carpet) .
There are a lot of different catfish that you can get for your home aquarium. Most of them stay small enough that they are easy to keep.
a few of the sea animals cannot stay under water for a long time.
They do not need a heated tank as long as your temperature will naturally stay over 70 degrees which it most likely will. If it does not I would invest in a heater.
It is impossible